The best open source alternative to Penpot is Pencil Project. If that doesn't suit you, our users have ranked more than 50 alternatives to Penpot and nine of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Penpot are Penpot Desktop, Akira, Aktivisda and Quant-UX.
Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.
Penpot Desktop is an unofficial desktop application for the open-source design tool, Penpot.
Akira is a native Linux Design application built in Vala and GTK. Akira focuses on offering a modern and fast approach to UI and UX Design, mainly targeting web designers and graphic designers. The main goal is to offer a valid and professional solution for designers who want to...
Aktivisda is a web application to facilitate the creation of visuals that use the graphic charter of an organization, and the spreading of this graphic charter.
Quant-UX is an integrated Prototyping and Analytics software. It allows you to design, test and analyze interaction prototypes.
Alva works with your production frontend components, adding up-to-date, responsive, and interactive designs to your living styleguide.
Core2D is a multi-platform application for making data driven 2D diagrams. The application has built-in wyswig vector graphics editor where you can bind data to shapes, share data across multiple documents, edit documents using layers.
Theory Maker is a free web app by Steve Powell for making any kind of causal diagram, i.e. a diagram which uses arrows to say what contributes to what. You make the diagrams just by typing the names of the elements (called variables) in a structured way into a (resizeable)...
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